Advertisements
Advertisements
प्रश्न
State the energy changes in the following case while in use:
Burning coal
Advertisements
उत्तर
Chemical energy to heat energy.
APPEARS IN
संबंधित प्रश्न
State the energy changes in the following case while in use:
A ceiling fan
State the energy changes that occur in a watch spring while it unwinds.
State the energy changes in the following while in use An electric bulb.
State the energy changes in the following while using an electric motor.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in photosynthesis in green leaves.
Explain conservation of energy.
A rocket is moving up with a velocity v. If the velocity of this rocket is suddenly tripled, what will be the ratio of two kinetic energies?
Avinash can run with a speed of 8 m s–1 against the frictional force of 10 N, and Kapil can move with a speed of 3 m s–1 against the frictional force of 25 N. Who is more powerful and why?
Define watt. Express kilowatt in terms of joule per second. A 150 kg car engine develops 500 W for each kg. What force does it exert in moving the car at a speed of 20 ms–1?
In an electric cell while in use, the change in energy is from ______.
